32.
James, P. W. & Hawksworth, D. L. 2009. Thelotrema Ach. (1803). In: Smith, C. W., Aptroot, A., Coppins, B. J., Fletcher, A., Gilbert, O. L., James, P. W. & Wolseley, P. A. (eds), The Lichens of Great Britain and Ireland, pp. 891–893. British Lichen Society, London.